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高时间分辨辐射温度测量技术
引用本文:易荣清,李三伟,江少恩,杜华冰,崔延莉,孙可煦,何小安.高时间分辨辐射温度测量技术[J].强激光与粒子束,2008,20(6).
作者姓名:易荣清  李三伟  江少恩  杜华冰  崔延莉  孙可煦  何小安
作者单位:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
基金项目:国家高技术研究发展计划(863计划)
摘    要: 通过对影响测量辐射温度时间分辨因素的研究,得出影响测量时间分辨的主要因素是系统的偏压、电缆的长度与带宽、衰减头的带宽和示波器的带宽与采样率。通过提高系统的偏压(3 kV)、缩短电缆的长度(2 m)、使用高带宽的衰减头(18 GHz)和高带宽(6 GHz)和2×1010/s采样率的示波器,在Silex-Ⅰ激光装置上进行系统的时间分辨测量,系统的上升时间为130 ps,时间分辨为215 ps。利用该系统,在上海神光Ⅱ装置开展的实验中,时间分辨好于215 ps,观测到了激光脉冲调整后辐射温度随时间的变化。

关 键 词:辐射温度  时间分辨  Silex-Ⅰ  神光Ⅱ激光装置  脉冲整型
收稿时间:1900-01-01;

Measurement of radiation temperature with high time-resolution
YI Rong-qing,LI San-wei,JIANG Shao-en,DU Hua-bing,CUI Yan-li,SUN Ke-xu,HE Xiao-an.Measurement of radiation temperature with high time-resolution[J].High Power Laser and Particle Beams,2008,20(6).
Authors:YI Rong-qing  LI San-wei  JIANG Shao-en  DU Hua-bing  CUI Yan-li  SUN Ke-xu  HE Xiao-an
Institution:Research Center of Laser Fusion, CAEP, P.O.Box 919-986, Mianyang 621900, China
Abstract:By analyzing time resolution of radiation temperature measurement, the main factors of systemic bias, cable’s length and bandwidth, attenuator’s bandwidth, oscillograph’s bandwidth and sampling rate have been determined. To improve the systemic time resolution, the system bias was increased to 3 kV, the cable length was shortened to 2 m, an attenuator with higher bandwidth(18 GHz) and an oscillograph with higher bandwidth(6 GHz) and sampling rate(22×1010/s) were used. Then, in Silex-Ⅰ laser , the systemic time resolution was measured, the systemic risetime is 130 ps, and the time resolution is 215 ps. Using this system, in the experiment on Shenguang-Ⅱ facility in Shanghai, the radiation temperature measurement of cavity target was carried out, and time resolution better than 215
Keywords:Time-resolution measurement  Silex-I laser system  Shenguang-Ⅱ facility  Pulse modulating
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